Journal of Geophysical Research
Three radio-frequency( RF) probe techniques--standingw ave impedancep robe, plasma frequency probe, and resonance rectification probe--have been simultaneously flown on rockets for ionospheric measurements. The results of the three probes are compared to establisht he relationshipsa mong them. The impedancep robe and plasma frequency probe measurements are in general agreement with each other and with other independent measurements. A model of antenna-ionosphericin teraction is used that neglects ion sheath and magnetic field effects. The resonance rectification probe shows resonance effects including peaks.and minimums that are a function of probe dc bias. The frequency of the dominant resonance peak does not correspond to the plasma frequency but is near a lower frequency of an impedances eriesr esonancea s measuredb y the plasmaf requencyp robe.
Baker, K. D.; Despain, A. M.; and Ulwick, J. C., "Simultaneous Comparison of RF Probe Techniques for Determination of Ionospheric Electron Density" (1966). Space Dynamics Lab Publications. Paper 5.